When was this? Did you send in the 1040ES with a payment and need to enter it into your tax return?
You can type estimates paid in the search box at the top of your return and click Find and it will give you a link to Jump To it.
OR
To enter Federal or State Estimated Taxes Paid, including a state estimated payment made in Jan 2019 for 2018 (or Jan 2020 for 2019), go to
Federal or Personal (for Home & Business version)
Deductions and Credits
Then scroll way down to Estimates and Other Taxes Paid
Estimated Taxes - click the Start or Update button
Estimated payments go on 1040 Schedule 3 line 8
And show up on 1040 line 18d
